ETSI ETS 300 555-1994 欧洲数字蜂窝通信系统(第2阶段).移动台-基站系统(MS-BSS) 接口数据链(DL)层规范.GSM 04.06(版本4.4.0)
European Digital Cellular Telecommunications System (Phase 2); Mobile Station - Base Station System (MS - BSS) Interface Data Link (DL) Layer Specification (GSM 04.06; Version 4.4.0)